root@benjr:~/MLNX_OFED_LINUX-2.2-1.0.1-ubuntu14.04-x86_64# ./mlnxofedinstall
..........
This program will install the MLNX_OFED_LINUX package on your machine.
Note that all other Mellanox, OEM, OFED, or Distribution IB packages will be removed.
Do you want to continue?[y/N]:y
..........
Error: One or more packages depends on MLNX_OFED.
Those packages should be removed before uninstalling MLNX_OFED:
mlnx-en-utils mlnx-en-dkms fio libopensm5 libibumad3 libibmad5 libibnetdisc5
To force uninstallation use '--force' flag.

至於使用時須要透過 opensm 來設定 -g 後面接的就是 GUID 剛剛透過 ibstat 可以看到目前裝置的 GUID.-B, –daemon
Run in daemon mode – OpenSM will run in the background.-g, –guid
This option specifies the local port GUID value with which OpenSM should bind.